Tonido Sync doesn't sync some files with characters that are incompatible with some operating systems. Starting with Tonido Sync Build 18199 : Files with these characters are not synced. Please rename them to something more suitable for use across multiple operating systems.

The * character

The < character

The > character

The : character

The \ character

The / character

The | character

The ? character

The * character

The ~ character

The following file names are also not synchronized

tonido.db

Thumbs.db

desktop.ini

Anything ending with .tmp

.tonidocache

Anything starting with Conflict_

sync.ico

.ds_store

Long Filenames or Paths

Windows Operating Systems only allows files and folder names of around 260 characters or less. So paths longer than those are not synced.